Boiler-feeder.



G. G. MILLER. BOILER. FEEDERL APPLIOAIIONPILIED mLYzz, 1909. RENEWEDJAN. 12, 1911.

Patented Feb. 21, 1911'.

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G. G. MILLER.

I BOILER FEEDER. Arrmoulofi 311.111) JULY 23, 1909. RENEWED JAN. 12,1911.

Patented Feb. 21, 1911,

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amen.

GEORGE C. MILLER, 0F FITCHBURG, MASSACHUSETTS, ASSIGNOR TO THELEOMINSTER MACHINE SUPPLY COMPANY, OF LEOIVIINSTER, MASSACHUSETTS.

BOILER-FEEDER.

Specification of Letters Patent.

Patented Feb. 21, 1911.

Application filed. July 22, 1909, Serial No. 509,003. Renewed January12, 1911. Serial No. 602,276.

To all whom it may coacerqu Be it known that I, GEORGE C. MILLER, acitizen of the United States, residing at Fitchburg, in the county ofWorcester and State of Massachusetts, have invented certain new anduseful Improvements in Boiler- Feeders; and I do declare the followingto be a full. clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention'relates to boiler feeders and has for its object toprovide an auxiliary attachment whereby the water is auto matically fedto the boiler without the employment of pumps or such other likeexpensive devices.

A further object of the invention is to provide means whereby apredetermined level of the water in the boiler will be maintained at alltimes.

lVith the foregoing and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts, as will be more fully described and particularly pointed out inthe appended claim.

In the accompanying drawings: Figure 1 is an elevation, partly insection illustrating the application of my improved water feedingdevice. Fig. 2 is a fragmentary view of the valve and valve casing forcon trolling the course of the steam and water. Fig. 3, is an elevation,of the water valve. Fig. 4, is a vertical transverse section thereoftaken on line 44 of Fig. 3; and, Fig. 5, is a front elevation, partly insection of the float device for operating the water cutoff valve.

Referring to the drawings for a more particular description of theinvention, 1, indicates the boiler of the furnace and 2 the steam domethereof.

3, indicates my improved attachment or device for automatically feedingwater to the boiler. This device comprises the water tank a, which ismounted below the boiler, the receiver :5, which communicates by meansof the pipe 6, with the lower end of the tank; the water pipe 7, whichprojects into the receiver 5; the steam pipe 8, which extends .in aparallel plane with the pipe 7 and the branch steam and water pipes 9and 10, which communicate respectively with the lower ends of the mainsteam and water pipes 8 and 7. The main water pipe 7 1s bentintermediate of its ends to provide the heating coils 11, and isprovided at its upper end with the horizontal section 12, whichcommunicates with the auxiliary water chamber 23. The upper end of thesteam pipe 8, communicates with the valve casing 14, by means of thevalve opening 13. A branch steam pipe 16, extends from the inner side ofthe casing 14, to the steam dome 2, and a second steam pipe 15 whichcommunicates with the rear side of the valve casing 14- by the valveopening 15 leads to the auxiliary water chamber. A segmental valve 17 inthe form of a fiat plate is revolubly mounted in the valve casing 14,and is adapted to close either of the openings 13 or 15. This valve isformed upon a shaft 18, provided with the arm 19, which is connected bymeans of the link 20, with the free end of the pivoted bar or rod 21,the inner end of which carries a ball float 22. This float works in theauxiliary water chamber 23, and rises or falls to operate the cut-ofi?valve 17. The coils 11, are inclosed by the casing 24, through which ispassed by means of the pipes 25 and 26, the exhaust of the engine inorder to heat the coils and give the water a preliminary heating beforeit is passed into the boiler. A feed pipe 27 extends from the bottom ofthe water casing or chamber 23, into the boiler.

In order to cut off the supply of water to the boiler after thepredetermined level of the water in the boiler has been reached, acut-off valve 28, is arranged between the ends of the pipe 27. Thisvalve comprises a casing 29, to which is screwed the upper and lowersections 30 and 31, of the pipe 27. A vertically disposed cut-off valve32, is arranged in the casing and extends across the entire widththereof, said valve being mounted upon one end of the rock shaft 33,with which is connected by means of the crank arm 34:, the upper end ofthe vertical operating rod 35, carrying the float 36,

Various changes in' the form, proportion and the minor details ofconstruction may beresorted to without departing from the V principle orsacrificing any of the advantages of the invention, as defined in theappended claim.

Having thus described my invention, what I claim is:

A structure of the character described comprising a boiler with a steamdome thereon, an attachment. for the boiler comprising a water tankarranged below the boiler, a receiver having a pipe communicating withsaichtank, a main water plpe projecting into the receiver and having acoil thereon medium of its length, a casing for inclosing' the coil,means for heating the coil, said water pipe being extended abovesaid-casing and having a horizontal section secured thereto whichcommunicates with an auxiliary water chamber, a main steam pipe arrangedparallel with the water pipe and having its lower end connected to thereceiver and its upper end connected to a valve casing by means of avalve'opening therein, a'branch steam pipe extending from the inner sideof said valve casing to said dome, a secondary steam pipevhavingcommunication with the rear side of said valve casing by a valveopening, a segmental valve removably mounted in said valve casing forcontrolling said steam pipes; a float in the auxiliary water chamber foroperating the segmental valve, a second float chamber connected with thewater space of the boiler and with the lower end of the auxiliary waterchamber, and a valve controlled by a float in the second float chamberfor controlling the flow of water from the lower part of the auxiliarywater chamber to the boiler.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

I GEORGE C. MILLER. \Vitnesses FREDERICK A. Cumnnn, FEsTUs C. CURRIER.

